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bulgar [2K]
3 years ago
14

PLEASE HELP ME PLEASE

Mathematics
1 answer:
Likurg_2 [28]3 years ago
8 0

Answer:

B

Step-by-step explanation:

(f – g)(x) = f (x) – g(x)=

3 {x}^{2}   - 4x + 3 \\  - 2 {x}^{2}  + 6x + 4 \\  = 5 {x}^{2}  - 10x - 1

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3 years ago
I’m confused on this answer anyone know it?
slamgirl [31]

Answer:

y=\frac{26}{7},\:x=-\frac{15}{7}

Step-by-step explanation:

\begin{bmatrix}4x+5y=10\\ -2x+y=8\end{bmatrix}\\\\\begin{bmatrix}-2\cdot \frac{10-5y}{4}+y=8\end{bmatrix}\\\\

-5+\frac{7y}{2}=8\\\\\mathrm{Multiply\:both\:sides\:by\:}2\\-5\cdot \:2+\frac{7y}{2}\cdot \:2=8\cdot \:2\\-10+7y=16\\y=\frac{26}{7}\\

\mathrm{For\:}x=\frac{10-5y}{4}\\\mathrm{Subsititute\:}y=\frac{26}{7}\\x=\frac{10-5\cdot \frac{26}{7}}{4}\\\\

x=-\frac{15}{7}\\

7 0
3 years ago
Please Help! I will give you a lot of points! (Section 8.1)
ikadub [295]

Answer:

12

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